AFA4000/E VAV Airflow Controller / p.31
Mains Fail
(Optional extra feature)
When the input configured as Mains Fail is activated:
• Red Alarm LED Halo illuminated
• Mains Fail displays
• Audible alarm sounds
• Audible can be muted by pressing the Mute pushbutton. This
silences the alarm (when configured)
Note: Not for use with the Relay Interface Unit.
Personnel Sensor
(Optional extra feature)
When the input configured as Personnel Sensor is activated:
• VAV Dual Set Point is active:
Occupied = High Set Point;
Unoccupied = Low Set Point
Note: When the Low Set Point is active, the Reduced Low Air and
Warning Air Alarms are active.
When the input configured as Fan Stop is activated:
• Off displays
• Red LED Halo illuminated
• Audible alarm muted
When the input configured as Fan Stop is de-activated:
• Start Up Timer displays
• Audible alarm and relays inhibited until Start up time has elapsed
Note: Used if the AFA4000 is a Slave unit with a common fan.
Remote master On/Off signal is used
When the input configured as Mute is activated:
• Audible alarm muted
• Mute Icon shown on display
Note: The Mute function disables the Mute pushbutton so that any
audible alarm can only be muted using the input, for example
remote key switch
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